Mobil Vacuoline 525
ISO VG 100 anti-wear, r&o gear oil
Buy
No retailer listing is on file for this oil. Email us and we will point you at a distributor. A quote form, and Zoro, Walmart, eBay, Grainger, MSC and Global Industrial, wait on programs that are not connected yet.
As an Amazon Associate, Evolvent Design earns from qualifying purchases. McMaster-Carr links are not affiliate links.
Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | — | ASTM D445 |
| KV100 | 10.7 cSt | ASTM D445 |
| Viscosity index | 99 | ASTM D2270 |
| Pour point | -24 °C | ASTM D97 |
| Flash point | 264 °C | ASTM D92 |
| Density at 15 °C | 0.88 g/cm³ | typical |
KV40 is hidden because 89 cSt is outside the ISO VG 100 band.
Grade checks
- Stored KV40 is outside the ISO VG 100 band, so it is not shown above.
Viscosity and temperature
KV40 and KV100 are both needed before ASTM D341 can draw a curve.
Classification
- Category: Gear
- Attribute: Anti-Wear, R&O
- Synthetic: Conventional
- Copper: 1A
- Note: Bearings, gears
Equivalents
| Oil | Score | Why |
|---|---|---|
| Shell Omala S2 G 100 | 84 | same ISO 100, VI 100 vs 99, additive aw/ro, conventional, pour -24 vs -24, buyable now |
| Shell Omala S2 GX 100 | 80 | same ISO 100, VI 99 vs 99, additive aw/ro, conventional, pour -24 vs -24 |
| Chevron Meropa 100 | 72 | same ISO 100, VI 100 vs 99, additive aw, conventional, pour -29 vs -24, flash within 15 °C |
| Castrol Optigear 1100/100 | 54 | same ISO 100, VI 100 vs 99, conventional, pour -27 vs -24 |
| Castrol Optigear EP 100 | 53 | same ISO 100, VI 97 vs 99, conventional, pour -24 vs -24 |
Scores use published typical data. This is not an exact equivalent, and it is not an OEM approval. Confirm the substitute with the machine builder.
Documents
Related: Mobil, Vacuoline 500 Series, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Mobil Vacuoline 525 an ISO VG 100 oil?
Yes. The catalogue lists it as ISO VG 100, which is a kinematic viscosity of 100 cSt at 40 °C, plus or minus 10 percent (90 to 110 cSt). Confirm the current data sheet before you fill a machine.
What is a Mobil Vacuoline 525 equivalent?
Published oils in the same application and grade include Shell Omala S2 G 100, Shell Omala S2 GX 100, Chevron Meropa 100. The match is from typical data-sheet values, not from an OEM approval. It is not an exact equivalent. Confirm the substitute with the machine builder.
Can Mobil Vacuoline 525 be mixed with another oil?
Mixing two oils that share a base family is sometimes done and sometimes a mistake. Do not mix this oil with a PAG. For any other mix, follow the maker's change-over guidance and the machine manual.
Report a data error
The report is stored for review. It does not change the page by itself, and it is not emailed anywhere yet.